Machine for forming rivet or bolt heads.



No. 735,539. 7 PATENTED AUG. 4, 1903. L. LOVAS.

MACHINE FOR FORMING RIVET 0R BOLT HEADS.

APPLICATION nun NOV. 4, 1901.

N0 MODEL. \2 v 2 BEBETSSHEET 1.

W66 Int/61%.? g Louis L0 /aa THEmoRRIs prrsns co. FNOTOQJTHOU wAsuma-rou, n.-c,

No. 735,539. PATENTED AUG. 4, 190a.

L. LOVAS. MACHINE FOR FORMING RIVET 0R BOLT HEADS.

APPLICATION FILED NOV. 4. 1901.

H0 MODEL. 2 SHEETS-SHEET 2.

WITNESS A [NVENTOR Attorneys- UNITED STATES 'l atented August 4, 196

PATENT OFFICE.

MACHINE FOR FORMING R IVET OR BOLT HEADS.

SPECIFICATION formingpart of Letters Patent No. 735,539, dated August 4, 1903.

Application filed November 4,1901. Serial No. 80,992. (No model.)

ing rivet and bolt heads, and has for its object to construct a machine into which the bar of iron out of which the bolt or rivet is formed is automatically fed, the head formed thereon, the bar cut off the desired length, r

and the headed rivet or bolt automatically discharged from themachine.

. To this end the invention resides in the novel arrangement and combination of parts to be hereinafter more fully described, and specifically pointed out in the claim.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of thisjspecification, and wherein like numerals of reference indicate corresponding parts throughout the several views, in which Figure 1 is a top plan View of my improved machine. Fig. 2 is a transverse vertical sectional view taken on the line :2 2 of Fig. 1 looking in the direction of arrows. Fig. 3 is a like view taken on the line 3 3 of Fig. 1

looking in the direction of the arrows. Fig. 4 is a detailed perspective view of the transversely-sliding die-carrying plate and the operating means therefor.

In the accompanying drawings, 1 indicates the bed or body of the machine, which at its forward end is provided with bearings 2, in which is journaled the operating shaft 3. This operating shaft is provided with a double crank 4 and on one end .has a beltwheel 5 and on its other end a cam 6. Connected to the pin 4 ofthe double crank 4 is a pitman-yoke 7, the outer end of which is slotted, so as to receive the pin- 4 of the double crank 4 therein, where it is held in position by the block 8 and securing-bolts 9. This pitman-yoke 7 is provided with a T- shaped opening atvits inner end, which receives the T-shaped end 10 of the pitman 11, the latter being pivotally connected at its inner end by a pin 11 to the slide-block 12, which operates in the cut-away portion of the bed or body portion of the machine, being held in position by the guide-plates 14, secured to the said bed or body in such a manner as to partly overlie the cut-away portion. The forward or T-shaped end of the pitman 11 is prevented from displacement by means of the block 15, inserted into the pitmanyoke 7. v

The adjusting-block 15 is made wedgeshaped and has an adj listing-screw 17 to operate against the pitman-yoke.

16 indicates a wear-block arranged in the block l2'at the rear end of the pitman. The slide-block 12 carries at its rear end a stop block or holder 18, which has an aperture 20 to receive the header l9--that is, brought into position to engage the end of the bar or rod out of which the bolt or rivet is formed-and is retracted, so as to permit the headed bolt or rivet to be discharged from the machine, the aperture 20 being made to receive the shanks of the headers of varying diameters, whereby the rivets can be formed with different-sized heads. The header issecured in the stop-block. 18 is a block, and 18 denotes bolts whereby the stop-block is removably held to the slide-block 12. The slide-block carries an offset 21, which interlocks with a sliding plate or bar 22, the end of which projects beyond the guide-plate 14 on the side of the machine and has a cam-groove or runway 23 formed in the same. This groove or runway is adapted to receive a roller 24, which is mounted within the cut-away portion 25 of a transverely-slidable die-carrying block 26, the latter being mounted in the cut-away portion of the bed or body 1 and adapted to be actuated transversely of said bed or body by the longitudinal movement of the said block 12 and the bar or plate 22. The bar or plate 22 is preferably beveled at its end, as at 27,

and this beveled end 27 engages the antifriction-roller 28, which is mounted within the cut-away portion 25 of the die-carrying block 26, adjacent to the roller 24. The diecarrying block 26 carries a movable die 29, which is preferably provided with semicircular grooves at its four opposite faces, so that the dies may be turned when one groove becomes worn by use. The movable die 29 is held to the block 26 by means of the clamp 30, pivoted to the bolt 31, carried by the diecarrying block 26, with one of its downwardlyextending ends engaging the upper face of the die-carrying block 26 and the other downwardly-extending end engaging the upper face of the movable die 29, the clamp being tightened to hold the movable die or slackened to permit of its adjustment or removal by the adjustment of nut 32 on bolt 31. Placed in the cut-away portion of the bed or body in advance of the die-carrying block 26 and at the other side of the die 29 is aguideblock 33, which has a guide 34 securely arranged therein and provided with a central aperture 35, through which the kicker-rod 36 extends. This guide-block 33 is also providedzwith an aperture or opening 37, through which the baror rod (not shown) being worked extends, and the guide 34 has semicircular grooves 34, one of which is in registration with the opening or aperture 37 through the guide-block 33. This guide-block is held by a clamp 38, similarly mounted to the clamp 30, with its one end engaging the guide-block and the other end engaging the upper end of the bed-plate or body of the machine. A stationary die 39 of the same form of construction as the movable die is held in the cut-away portion of the bed or body by means of the clamp 40 of the same form of construction as the clamps 30 and 38. The kickerrod 36 is connected at its rear end to the lever 41, that is pivoted in the bracket 42, attached to the rear end of the bed or body. The other end of this lever is connected to a rod or bar 43, which extends along the side of the machine and bears against the cam 6 at its forward end, this bar or rod being guided in keepers 44, attached to the side of the machine, and is under the tension of a spring 45, which engages in the notches 46 in said rod or bar 43. A swinging or movable gage 48 is employed, against which the end of the bar or rod being worked engages when it is inserted through the opening 34 37 in the guideblock 33 and the guide 34, the rod or bar being inserted into this openingthrough the cutaway portion 47 in the rear end of the bed or body portion 1. This gage or stop 48 is suspended from the shaft 49, which is journaled in bearings 50, mounted upon one of the guide-plates 14. The gage is automatically elevated, so as to be out of the way of the header 19 When the latter is moved up against the end of the rod being worked, by means of the lever 51, which is rigidly fastened to the shaft 49, and is raised by means of the cam 52, mounted upon the upper face of the slideblock 12. The lever 51, shaft 49, and gage 48 are under the tension of the spring 53, rigidly attached to the upper face of the bed or body 1, with its one end engaging in the rear end of the lever 51, in order that when the cam 52 is not engaging the lever 51 the gage 48 will be always in position where it would be engaged by the rod being worked when the latter is inserted through the opening 37. In operation the rod out of which the rivets or bolts are to be formed comes from the heating-furnace and is inserted in the opening 47 through opening or aperture 37, with its end in engagement with the gage 48. As the drive-shaft 3 revolves to actuate the slideblock 12 the latter is moved inward, causing the cam 52 to engage the lever 51 and operate the shaft 49, so as to raise the gage 48 out of the Way of the header 19, which, owing to the outward movement of the slide-block 12, has previously been brought into position to engage with the end of the rod being worked. The inward movement of the slide-block 12 has caused the extension of the plate or bar 22 to be forced into the opening 25 in the diecarrying block 26, so that the roller 24 engages in the inclined groove 23, and the inclined end 27 comes into engagement with the roller 28, so as to press on the latter, thus actuating the die-carrying block 26 transversely of the machine and moving the die 29 forward into engagement with the rod or bar, so as to sever the same and clamp it against the die 39, which is located a short distance beyond the opening 37, and upon the further inward movement of the slide-block 12 the header 19 engages the projecting end of the rod, so as to form a head thereon and simultaneously with the completion of the inward movement of the slide-block 12. On the continuous rotation of the drive-shaft and a consequent outward movement of the slideblock due to the operation of the double crank 4 the die-carrying block 26 is returned to its original position, and the cam actuating against the end of the rod 43 forces this rod rearwardly, actuating the lever 41 and cansing the kicker-arm 46 to remove the finished rivet or bolt 46 from the groove in the stationary die, from whence it falls through the opening 54, that extends through the bedplate or body of the machine.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

A machine for heading rivets, bolts and the like comprising a bed, a drive-shaft, a slideblock having a header, means for connecting the drive-shaft with the slide-block, a slidebar having a cam-groove and beveled inner end and connected with the slide-block, a transversely arranged fixed die, a transverseiy-arranged die-carrying block having a die and within which the beveled inner end of the slide-bar is received, a guide-roller mounted within the die-carrying block and traveling in the cam-groove, a. roller mounted within the die-carrying block against which the beveled end of the slide-bar impinges, and the guide-block located at the rear of the fixed block and having a guide for receiving the heated rod. IO

In testimony whereof I affix my signature in the presence of two witnesses.

LOUIS LOVAS.

Witnesses:

JOHN NOLAND, E; E. POTTER. 

